NPIMap

Organization Active NPI

Grossmont Family Medical Group, Inc.

  • Internal Medicine Physician
  • La Mesa, CA
National Provider Identifier
1427099720
Registry record updated Sep 11, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
Legal business name
GROSSMONT FAMILY MEDICAL GROUP, INC.
Practice address
5525 Grossmont Center Dr
Suite 200
La Mesa, CA 91942-3009
Phone
(619) 644-6500
Fax
(619) 644-6526
NPI assigned
Jun 9, 2006
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Sep 11, 2025

Registry information is reported by the provider to CMS and is not verified. About this source

Authorized official

Name
Dr. Joseph Francis Leonard, M.D.
Title
Medical Director
Phone
(619) 644-6500

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Family Medicine PhysicianGroup: 193200000X MULTI-SPECIALTY GROUP 207Q00000X
Internal Medicine PhysicianGroup: 193200000X MULTI-SPECIALTY GROUP 207R00000X Primary

Addresses

Primary practice location

5525 Grossmont Center Dr
Suite 200
La Mesa, CA 91942-3009

Mailing address

5525 Grossmont Center Dr
Suite 200
La Mesa, CA 91942-3009
Phone (619) 644-6500

Other identifiers 1

IdentifierTypeStateIssuer
GR0086840MedicaidCA

National Provider Directory

National Provider Directory

Practitioners & affiliated clinicians

Practitioners 4

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1149811200000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1757548800000",
    "number": "1427099720",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5525 GROSSMONT CENTER DR",
            "address_2": "SUITE 200",
            "city": "LA MESA",
            "state": "CA",
            "postal_code": "919423009",
            "telephone_number": "619-644-6500",
            "fax_number": "619-644-6526"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5525 GROSSMONT CENTER DR",
            "address_2": "SUITE 200",
            "city": "LA MESA",
            "state": "CA",
            "postal_code": "919423009",
            "telephone_number": "619-644-6500",
            "fax_number": "619-644-6526"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "GROSSMONT FAMILY MEDICAL GROUP, INC.",
        "organizational_subpart": "NO",
        "enumeration_date": "2006-06-09",
        "last_updated": "2025-09-11",
        "status": "A",
        "authorized_official_last_name": "LEONARD",
        "authorized_official_first_name": "JOSEPH",
        "authorized_official_middle_name": "FRANCIS",
        "authorized_official_title_or_position": "MEDICAL DIRECTOR",
        "authorized_official_telephone_number": "619-644-6500",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "M.D."
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Family Medicine",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Internal Medicine",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "GR0086840",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in La Mesa, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.